<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">
            {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import Bscroll from "better-scroll"
  import {mapState,mapMutations} from 'vuex'
  export default {
    name: "CityList",
    props: {
      hot: Array,
      cities: Object,
      letter: String
    },
    computed:{
      ...mapState({
        currentCity:'city'
      })
    },
    methods:{
      handleCityClick(city){
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    mounted() {
      this.scroll = new Bscroll(this.$refs.wrapper);
      for (let i = 0; i < this.$children.length; i++) {
        console.log(this.$children[i].msg);
      }
    },
    watch:{
      letter (){
        if(this.letter){
          const element=this.$refs[this.letter][0];
          this.scroll.scrollToElement(element)
        }
      }
    }
  }
</script>
<style lang="less" scoped>
  @import "~styles/z.less";
  @import "~styles/varible.less";
  @import "~styles/mixins.less";

  .border-topbottom {
    &:before {
      border-color: #ccc
    }
    &：after {
      border-color: #ccc
    }
  }

  .border-bottom {
    &:before {
      border-color: #ccc;
    }
  }

  .title {
    line-height: 0.54rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
    .font-s(0.26rem);
  }

  .list {
    .abs;
    overflow: hidden;
    top: 1.58rem;
    left: 0;
    right: 0;
    bottom: 0;

    .button-list {
      padding: 0.1rem 0.6rem 0.1rem 0.2rem;
      overflow: hidden;
      .button-wrapper {
        width: 33.33%;
        .fl;
        .button {
          margin: 0.1rem;
          padding: 0.1rem;
          text-align: center;
          border: 0.02rem solid #ccc;
          border-radius: 0.06rem;
        }
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      color: #666;
      padding-left: 0.2rem;
    }
  }

</style>
